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74HC251DB

8-input multiplexer; 3-state

Philips Electronics 

Philips Semiconductors

8-input multiplexer; 3-state

AC WAVEFORMS

Product specification

74HC/HCT251

(1) HC : VM = 50%; VI = GND to VCC.

HCT: VM = 1.3V; VI = GND to 3 V.

Fig.6 Waveforms showing the multiplexer input (In) and select input (Sn) to output (Y) propagation delays and

the output transition times.

(1) HC : VM = 50%; VI = GND to VCC.

HCT: VM = 1.3V; VI = GND to 3 V.

Fig.7 Waveforms showing the multiplexer input (In) and select input (Sn) to output (Y) propagation delays and

the output transition times.

(1) HC : VM = 50%; VI = GND to VCC.

HCT: VM = 1.3V; VI = GND to 3 V.

Fig.8 Waveforms showing the 3-state enable and disable times.

PACKAGE OUTLINES

See “74HC/HCT/HCU/HCMOS Logic Package Outlines”.

December 1990

7

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